1,721,163 research outputs found
Black Spruce Diameter Growth Model Data
No full textThis data was used in fitting diameter growth models for a historical silviculture study in lowland black spruce. It consists of an initial diameter and second diameter 9-11 years after the initial measurement for 10,231 black spruce trees. Also included are other key individual tree and stand-level variables used in formulating the diameter growth model, and the treatment associated with each tree, plot, and compartment.Anderson, Brian D; Windmuller-Campione, Marcella A; Russell, Matthew B. (2018). Black Spruce Diameter Growth Model Data. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/199817
Russell, Matthew (Death, 1910-08-10)
No full textAddress: Eastern Ave Broad 1756 Eastern Ave4274/1910Original record filed in drawer labeled 'Runk-Ryan'
White-tailed deer density estimates across the eastern United States, 2008
No full textThe QDMA spatial map depicting deer density (deer per square mile) was digitized across the eastern United States. Estimates of deer density were: White = rare, absent, or urban area with unknown population, Green = less than 15 deer per square mile, Yellow = 15 to 30 deer per square mile, Orange = 30 to 40 deer per square mile, or Red = greater than 45 deer per square mile. These categories represent coarse deer density levels as identified in the QDMA report in 2009 and should not be used to represent current or future deer densities across the study region.In 2008, the Quality Deer Management Association (QDMA) developed a map of white-tailed deer density with information obtained from state wildlife agencies. The map contains information from 2001 to 2005, with noticeable changes since the development of the first deer density map made by QDMA in 2001. The University of Minnesota, Forest Ecosystem Health Lab and the US Department of Agriculture, Forest Service-Northern Research Station have digitized the deer density map to provide information on the status and trends of forest health across the eastern United States.Quality Deer Management AssociationUS Department of Agriculture, Forest Service-Northern Research StationMinnesota Agricultural Experiment StationWalters, Brian F.; Woodall, Christopher W.; Russell, Matthew B.. (2016). White-tailed deer density estimates across the eastern United States, 2008. Retrieved from the University Digital Conservancy, http://dx.doi.org/10.13020/D6G014
Russell, Matthew (Death, 1885-11-11)
No full textAddress: Charles St.Age at death: 46 yrsPg 123/1885/167/MW M/Ireland/Dr. B. Agin/Sullivan/St.Joseph's NewOriginal record filed in drawer labeled 'Runk-Ryan'
Volume, Growth, and Stand Dynamics of a 192-year Old Pinus resinosa (Red Pine) Forest
No full textRussell, Matthew B.; Anderson, Brian. (2016). Volume, Growth, and Stand Dynamics of a 192-year Old Pinus resinosa (Red Pine) Forest. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/216441
Forest Health Concerns and Management among Resort & Campground Owners in Minnesota
Full text linkBobick, Bridget; Russell, Matthew; Schneider, Ingrid. (2016). Forest Health Concerns and Management among Resort & Campground Owners in Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/197979
Strongly coupled physics from the gauge gravity duality
No full textThe gauge/gravity duality links the fields of string theory and quantum field theory. The duality states that systems that are strongly coupled in one theory are weakly coupled in the other. Thus, intractable problems in strongly coupled physics can instead be calculated using the gravity side of the duality. In this thesis we study three areas of strongly coupled physics: quantum chromodynamics, condensed matter theory and (non)-hydrodynamic physics. First, we study quantum chromodynamics (QCD), where we attempt to gain insight into the temperature chemical potential QCD phase diagram by extending an exactly soluble holographic model into imaginary chemical potential. We then look for structure at small real µ and imaginary µ that help to reconstruct the large real µ phase diagram. We find that the phase diagram has boundaries of regions where metastable vacua exist and these boundaries, as well as the phase boundaries, converge at the holographic QCD critical point. We then move on to condensed matter theory where we study a top-down holographic Weyl semi-metal where we find the defining characteristic of a Weyl semi-metal: a quantum phase transition from a topological state with non-zero anomalous Hall conductivity to a trivial insulator. Unlike previous models, we find that the anomalous Hall conductivity is independent of model parameters at zero temperature and is also first order. At non-zero temperature the transition remains first order, and the anomalous Hall conductivity acquires non-trivial dependence on model parameters. Finally, we study the transition between non-hydrodynamic modes and hydrodynamic modes in holographic strange metals, where the microscopic description of the collective excitations is unknown but departs from the standard weakly-coupled Fermi liquid theory. We find that by including translational symmetry breaking the propagating non-hydrodynamic modes are damped, until at sufficiently large symmetry breaking parameters the mode transitions to the purely imaginary diffusive hydrodynamic mode
Managed White Spruce Stands Influenced by Spruce Budworm: How Does the Forest Vegetation Simulator Perform?
No full textRussell, Matthew B.; D'Amato, Anthony W.. (2015). Managed White Spruce Stands Influenced by Spruce Budworm: How Does the Forest Vegetation Simulator Perform?. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/216440
Low mu and imaginary mu signals of a critical point in the phase diagram of an exactly soluble chiral symmetry breaking theory
No full textHolography has allowed the exact solution of a small number of largeNcgauge theories. Amongstthese is anN=2 SYM theory of quarks interacting withN=4 gauge fields. The temperature chemicalpotential phase diagram for this theory in the presence of a magnetic field is exactly known andshows first and second order chiral symmetry restoration transitions and a critical point. Herewe extend this phase diagram to imaginary chemical potential to seek structure at small realμand imaginaryμthat help to reconstruct the large realμphase structure. We also explore aphenomenologically deformed version of the theory where the critical point can be moved into theimaginary chemical potential plane. In particular we observe that when the transition is secondorder in these theories there are naturally two distinct transitions - one for the onset of densityand one for chiral symmetry restoration. In addition, the phase diagram has boundaries of regionswhere metastable vacua exist and these boundaries, as well as the phase boundaries, converge atthe critical point. These observations may point to techniques for the study of the QCD criticalpoint either on the lattice or using heavy ion collision data
- …
